Tyrannosaurus vs Spinosaurus

Spino wins nonetheless

Yes, Monsters Resurrected was terribly inaccurate. Spinosaurus aegyptiacus being able to take a 7-8 ton animal down with a single slap (which is far from what its arms could do), as well as lifting a rather large Rugops primus apparently easily by using its jaws; does this sound accurate to you?

No, you're welcome.

Here comes my (probably wrong) opinion.

When you look at the skeletal design of Tyrannosaurus, you can see adaptations that this was an animal with the build of an animal that was going to hunt big game. It lived with two of the toughest herbivores in history (Triceratops and Ankylosaurus)and in the southern part of its range it may have hunted Alamosaurus (I believe), which may have been one of the larger sauropods in North America. Compare that to Spinosaurus, a dinosaur who is not really designed for constant battles that may lead to death. Instead, we can see that Spino was less robustly built, which likely meant that is was not a dinosaur of full-on frontal combat. Those arms, while impressive, had likely limited movement (based off of relatives). They could not likely reach high enough to hit a vulnerable area (and certainly not down a Rex in one go). The way I see it is, while Spinosaurus was a tough dinosaur and undoubtedly would be terrifying in combat, I think that Tyrannosaurus would likely have been more than a match for it.

EXACTLY!

I never stated that Spinosaurus wouldn't fight back. In fact, I was implying that it would have put up quite a fight. I'm just saying that Tyrannosaurus was more realistically a dinosaur Hunter. Spinosaurus hunted other dinosaurs, no doubt in my mind, but based off of evidence from relatives, we can infer that it ate both fish and other dinosaurs (inferences are not facts, mind you). Spinosaurus was successful, yes. Five million years with tough competition, but more often than not it may have avoided competition unless necessary. To put it bluntly, Spinosaurus was a vicious predator, but one who probably didn't need to fight as often as others. He was mostly piscivorous, likely eating dinosaur meat as well. It's not going to roll over and die, but Spinosaurus, even when it's predatory, didn't have very aggressive prey. Juvenile, young, sick, and small sauropods and Ouranosaurus, which could have likely outran Spinosaurus, couldn't exactly kill it with three horns or a heavy tail club like Tyrannosaurus had to deal with. TL;DR, actively hunting and fighting is what Tyrannosaurus was built to do. Spinosaurus could do it too, but it wasn't primarily designed for that.